>I would go for the built-in rules.
>
>Advantages
>(1) Only one place to put them in
>(2) Whatever place you modify the data, you have to get past the rules first
>(3) Easier to write the interface - less code
>(4) The built-in work within a transaction

I'm doing it right now in test environment, but how should I move my database changes to production? We don't have SDT here and the practice so far was to manually apply structure changes.